Const strings and bytes were not properly converted to compile time bools.

Contracts @require/@ensure are no longer treated as conditionals, but must be explicitly bool.

lib/std/core/allocators/dynamic_arena.c3

@@ -61,8 +61,8 @@ struct DynamicArenaChunk @local
 }
 
 <*
- @require ptr
- @require self.page `tried to free pointer on invalid allocator`
+ @require ptr != null
+ @require self.page != null  `tried to free pointer on invalid allocator`
 *>
 fn void DynamicArenaAllocator.release(&self, void* ptr, bool) @dynamic
 {
@@ -77,7 +77,7 @@ fn void DynamicArenaAllocator.release(&self, void* ptr, bool) @dynamic
 <*
  @require size > 0 `Resize doesn't support zeroing`
  @require old_pointer != null `Resize doesn't handle null pointers`
- @require self.page `tried to realloc pointer on invalid allocator`
+ @require self.page != null  `tried to realloc pointer on invalid allocator`
 *>
 fn void*! DynamicArenaAllocator.resize(&self, void* old_pointer, usz size, usz alignment) @dynamic
 {

lib/std/core/allocators/heap_allocator.c3

@@ -12,7 +12,7 @@ struct SimpleHeapAllocator (Allocator)
 }
 
 <*
- @require allocator "An underlying memory provider must be given"
+ @require allocator != null  "An underlying memory provider must be given"
  @require !self.free_list "The allocator may not be already initialized"
 *>
 fn void SimpleHeapAllocator.init(&self, MemoryAllocFn allocator)

lib/std/core/allocators/on_stack_allocator.c3

@@ -56,7 +56,7 @@ struct OnStackAllocatorHeader
 }
 
 <*
- @require old_pointer
+ @require old_pointer != null
 *>
 fn void OnStackAllocator.release(&self, void* old_pointer, bool aligned) @dynamic
 {